Mapping between taxonomies

This article outlines general guidelines for data consumers who want to use published materials to map and compare sustainability disclosures that reported values following different standards.

Guidelines for mapping between taxonomies

Data consumers should consider the following when mapping between taxonomies:

• Use official concordances.
  Standard setters and taxonomy authors prepare and publish their official concordances. Use the official concordances to convert and compare the data.
  Learn more about recording concordances between taxonomies
• Use concordances and conversion formulas to convert units.
  When multiple reports describe the same subject, but they use different units, use concordances or conversion formulas described in the XBRL Units Registry to convert values reported in different units.
  Learn more about converting units and deriving data
  Learn more about XBRL Units Registry
• Use taxonomy metadata to find data.
  If there are no official concordances and it is impossible to convert the reports automatically, use reference metadata to filter through the data and find the information you need.
  Learn more about extra metadata in concepts